53012243 has 4 divisors (see below), whose sum is σ = 54012528. Its totient is φ = 52011960.

The previous prime is 53012191. The next prime is 53012251. The reversal of 53012243 is 34221035.

It is a happy number.

53012243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53012243 is a prime.

It is a Duffinian number.

53012243 is a modest number, since divided by 12243 gives 53 as remainder.

It is not an unprimeable number, because it can be changed into a prime (53012293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500063 + ... + 500168.

It is an arithmetic number, because the mean of its divisors is an integer number (13503132).

Almost surely, 2^53012243 is an apocalyptic number.

53012243 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

53012243 is a deficient number, since it is larger than the sum of its proper divisors (1000285).

53012243 is a wasteful number, since it uses less digits than its factorization.

53012243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000284.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 53012243 is about 7280.9506934191. The cubic root of 53012243 is about 375.6574965956.

Adding to 53012243 its reverse (34221035), we get a palindrome (87233278).

The spelling of 53012243 in words is "fifty-three million, twelve thousand, two hundred forty-three".